Lenovo IdeaCentre K330B Performance Desktop PC - Intel Core i3-2120 Dual-Core 3.30GHz, 8GB DDR3, 500GB HDD, DVDRW, Keyboard/Mouse, Office Starter 2010, Windows 7 Home Premium 64-bit 2nd generation Intel Dual Core i3-2120 3.30GHz processor; delivers excellent system performance; runs most programs and applications 8GB 1333MHz DDR3 Memory; delivers faster, smoother multitasking 500GB 7,200RPM SATA Hard Disk Drive; stores up to 500GB of data DVDRW Dual Layer optical drive; reads and writes data on DVDs RJ-45 Interface; connects the PC to a network device Genuine Windows 7 Home Premium 64-bit. Microsoft Windows 7 Home Premium 64-bit operating system preinstalled Provides a stable computing platform. Lenovo Enhanced Experience 2.0 for Windows 7 Intel HD Graphics 3000 6 USB 2.0 connectors, HDMI 16-in-1 media reader Supports Memory Stick, Memory Stick PRO, Memory Stick Duo, Memory Stick PRO Duo, Secure Digital, miniSD, Secure Digital High Capacity, miniSDHC, xD-Picture Card, Microdrive and CompactFlash I/II formats. HD graphics support Support for 7.1 channel digital surround sound Convenient top-mounted power button Lenovo Rescue System makes data backup and recovery simple so you can spend time on more enjoyable tasks Tool-free chassis design for easy upgrade and maintenance HDMI Out Port USB Mouse and Keyboard Included Software package included With Microsoft Office Starter 2010 (Includes limited versons of Word and Excel only) Built-in 10/100/1000 Gigabit Ethernet LAN For quick and easy wired Web connection.